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Juvenile heat stress tolerance in Triticum durum—Aegilops tauschii derived synthetics: a way forward for wheat improvement

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Relation http://oar.icrisat.org/12569/
https://link.springer.com/article/10.1007/s11033-022-07595-8
https://doi.org/10.1007/s11033-022-07595-8
 
Title Juvenile heat stress tolerance in Triticum durum—Aegilops tauschii derived synthetics: a way forward for wheat improvement
 
Creator Kaur, A
Grewal, S K
Kaur, S
Sharma, A
Srivastava, P
Garg, M
Wani, S H
Chhuneja, P
Singh, K
Kaur, S
 
Subject Wheat
 
Description Background Exponentially increasing population and everchanging climatic conditions are two major concerns for global food security. Early sowing in the second fortnight of October is an emerging trend with farmers in Indo Gangetic Plains to avoid yield losses from terminal heat stress. This also benefits the use of residual soil moisture of rice crop, conserving about one irrigation. But most of the available wheat cultivars are not well adapted to early-season sowing. Methods and results Two in-house developed SHWs, syn14128 and syn14170, were screened for juvenile heat stress. Seedling length, biochemical parameters, and expression of amylase gene immediately after heat shock (HS) of 45 °C for 12 h and 20 h, and 24 h indicated significantly lower malondialdehyde, hydrogen peroxide, and higher free radical scavenging activities. Syn14170 reported higher total soluble sugar (TSS) under both HS periods, while syn14128 had a sustainable TSS content and amylase activity under HS as well as the recovery period. Conclusions Both the SHWs had lower oxidative damage along with high free radical scavenging under heat stress. The higher expression of amy4 along with sustainable TSS after heat stress in syn14128 indicated it as a potential source of juvenile heat stress tolerance. Variable response of SHWs to different biochemical parameters under heat stress opens future
perspectives to explore the enzymatic pathways underlying these responses.
 
Publisher Springer
 
Date 2022-06-06
 
Type Article
PeerReviewed
 
Format application/pdf
 
Language en
 
Rights cc_attribution
 
Identifier http://oar.icrisat.org/12569/1/Molecular%20Biology%20Reports_49_5669-5683_2022.pdf
Kaur, A and Grewal, S K and Kaur, S and Sharma, A and Srivastava, P and Garg, M and Wani, S H and Chhuneja, P and Singh, K and Kaur, S (2022) Juvenile heat stress tolerance in Triticum durum—Aegilops tauschii derived synthetics: a way forward for wheat improvement. Molecular Biology Reports, 49. pp. 5669-5683. ISSN 1573-4978